The QSC12R3A from Qualwave is a RF & Microwave Circulator with Frequency 1400 to 6000 MHz, Bandwidth 1000 MHz, Average Power Forward 10 to 100 W, Insertion Loss 0.30 to 0.80 dB, Isolation 18 to 20 dB. Tags: Surface Mount, Surface Mount Circulator. More details for QSC12R3A can be seen below.